Landfill gas recovery

Details Landfill gas recovery Landfill gas recovery

1995-01-11

1997-10-28

McMahon, Timothy

Gas: heating and illuminating

Methane -containing product, or treatment or recovery process

481275, 481983, 48197A, 95 42, 95149, 95229, C01B 332

Patent

active

056813600

ABSTRACT:
A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a reduced amount of carbon dioxide absorbent which itself may be an in situ derived and recoverable constituent. Separated methane may be concentrated into a high heating value fuel, and a highly pure food-grade carbon dioxide product may also be recovered. Process streams may be used to provide fuel for compression and refrigeration and/or to regenerate carbon dioxide absorbent.

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